R&S ZNB Series User Manual page 106

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R&S ZNB/ZNBT
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The reference marker ("R") defines the reference value for all delta markers.
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A delta marker ("DeltaM1, DeltaM2...") indicates the coordinates relative to the ref-
erence marker.
A special set of markers M1 to M4 is provided for bandfilter search mode.
The most common tasks to be performed with markers can be achieved using the
"Marker" menu functions:
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Determine the coordinates of a measurement point on the trace. In polar diagrams
where no x-axis is displayed, markers can be used to retrieve the stimulus value of
specific points.
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Determine the difference between two trace points or the relative measurement
result ("Delta Mode").
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Convert a complex measurement result into other formats.
Markers also play an important role in performing the following advanced tasks:
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Change the sweep range and the diagram scale ("Marker Function").
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Search for specific points on the trace ("Marker Search", "Target Search", "Bandfil-
ter").
Activating and moving markers
To activate a marker, either select the marker symbol itself or the corresponding line in
the marker info field.
To move the active marker on the trace, use one of the following methods:
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Drag the marker symbol to the desired position (Cartesian diagrams only).
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Activate the "Markers" tab of the "Marker" softtool (Trace – [Marker]) and enter the
related stimulus value numerically.
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Use the functions on the "Marker Search" softtool tab to move the marker to a spe-
cific position.
If the marker position is adjusted using the roll key, the mouse or the cursor keys, it
always remains within the sweep range. If set explicitly by entering a numeric value,
the marker position can be outside the sweep range. In this case, the marker symbol is
automatically positioned to the start or stop value of the sweep range, whichever is
closer.
Marker info field
The coordinates of all markers defined in a diagram can be displayed in the info field,
which by default is located in the upper right corner.
User Manual 1173.9163.02 ─ 62
Concepts and features
Screen elements
106